Rubber-working machine.



. BULLEY,

RUBBER wenn Patented Mal'. 26, 1918.

srarns PATENT ernten.

GEORGE w. nimmer,4 or CHICAGO, rumors.

furtherobjeet'is the provision vof sim- -pleu eens-:for dividingthe material into lsfnfiglll" portions as it comes from the mixing "fachine',m 1,d then" mix these small portions @hier naar r "25f th'ei objects will appear hereinafter. embodiment of my invention is illusf trated in thegiccompanyng drawing, formfing" a part 'of this specification, and in .Whic hJL l is a side elevation of a mixing machine embodying V my invention.

Fig.` 2 is alseetion taken on a horizontal planeon line 2 2 of Fig. 1. A. 'F ig. 's a broken rear endyiew of the fdevice;I andV `Fig. ,4 is a section taken as on'line 4-4 lii'iFl'gJl. j I .Ihaveshown a casing' 5 formed of two .",paS` 6,; and 7, secured together by means l.4 0, o f .cap screws 8. 'It will, however, be ap- 'j larent thata suitable casingtoembody my mvention may be formed' in many other fmanljiers.' In` the form illustrated, I have shown two substantiallytubular chambers 9 and 10 in the casing 5. In each of the chambers 9 and 10 I mount a suitable mixing and distributing member. In the form shown, I have illustrateda screw member 11 in chamber 9, and a screw member 12 in chamber 10. .These screw, members illus- "L `trat`e"`mixing and distributing' means, and it will be apparent that other forms of such means may be used, when so desired. The stems 13 of the screw members 11 and 12 extend4 through the front or feeding end of the casing 5,*and are provided with gears Specicationof Letters Patent.

Patented Mar. 26, 1918.

Application 1ed March 10, 1917. Serial No. 153,834.

111. The gears liare connected together by a gear-21 so that themembers 114 and 12 rotate in the same. direction. One of the stems 13 is provided with a pulley. 15 which may be connected to any suitable source of power, not shown, by. an endless belt, not shown. The casing' 5 is provided 'with an opening 16 between the ychambers 9 and 10 substantiallyl throughout the length of their adjacent sides vso that material will he free to pass from one of the chambers'to the other in the operation of the machine.

It is desirable to form the screw members 11 and 12 in such a manner or to connect them in such a manner that one Will-be able to force material through the casing 5 at a greater speed than the other. This will cause one'of the` members to'carrymaf terial away from .the other.melnber through opening 16, so that-particlesof the material will Abe separated from other particles, and mixed again with still other particles during their passage through the casing 5. One of the members 11 and 12 may have its pitch longer than the other in order to cause one to force the material along faster than the other, or one may revolve at a. different rate of speed from the other.

The discharge end of the easing 5 is ref erably closed by a die 17, having per orations`18 therein. The die l'l'rnay extend across the discharge opening of both of the chambers 9 and 10 so that 4material from both of said chamberswill be discharged through said die. It will be apparent that the die 17 may be made in more than one part, or of a-ditferent size or shape than shown.

The die 17 is preferably mounted 'so that its outer surface extends slightly beyond, or

vatleast flush with the discharge end of the` casing 5, in order-| to permit a mixing or' severlng means to 'travel over the outer surface of the die 17 in order to remix the partic-les of material as they are forced throgh the openings 18. As an example of such a remiximr means, I have mounted a shaft 19 'beneath the casing 5 in the base 2O and connected the shaft 19 with one of the gears 14 by ixinrr gear 21 to shaftv19. On the end of the shaft 19-at the discharge end of the casing 5, I provide a wheel made up of a. I

hub 22 and rim 23. Wire spokes 2a connect the l1ub a-.d rim of the Wheel. The vWire spokes 24 may be connected to the hub and rim inany desirable manner` 4The form I have shown comj'irises bending the inner ends of the spokes Q11 and passing them through openings in the hub 22, as clearly indicata-d in lf`igs. 2 and 3. The outer ends of the spokes are secured to theiriin 23 by nipples similar to the nipples employed in the conventional bicycle wheel construe tion. vvides the' srn'thistreams of materials coming from the openings 18 and moves these divided parts around to other of the divided parts coming from other of the openii'igs` 18, thereby mixing the material further a's it is discharged from the machine.

In smaller sizes of mixing machines, as above indicated, no cooling means will be required. It will be found desirable, however, to use Water-cooling jackets on larger devices. I have not Shown any such cooling devices, but 4it is apparent that one skilled in the art of rubber mixing, and the like, will be familiar with providing suitable cooling means for the device.

Thilo I have illustrated and described the preferred form of my invention, I do not desire to be limited to the precise details set forth, but desire to avail myself of such variations and changes as come within the scope of the appended claims.

The method disclosed herein constitutes the subject matter of my copending application Serial No. 154,968, filed Mar 15, 1917.

1. A mixing machine comprising a hous ing having a plurality of chambers therein in communication along their adjacent sides; and relatively'dierential mixing devices in said chambers adapted to prov'ress the mateP rial at different speeds in said chambers.

2. A mixing machine comprising a plurality of differentially operable mixing members having their axes in substantial parallelism and acting to transfer material back and forth between the members and a casing inclosing the mixing members, and form-v ing mixing chambers, and having an opening establishing communication for the passagetof the material between the adjacent sides of said members.

3. Amixing machine comprisino' a casing having a plurality of chambers side b'y side and communicating with each other along their adjacent sides; a screw member in and substantially fitting each of the chambers, said screw members being adapted to move material at different" speeds through said casing; and perforated means at the discharge ends ,of'sa-i-d-chambers adapted to rctard the movements of material by the screw t members from the casing.

4. A mixing machine comprising a plu. ralitjv of mixing members arranged to progres.; portionscthc material. in the same general direction al different speeds; a casing around thernixing nien'ibers, there being This moving and severing device di-v an opening in the casing between the adja cent sides o'l" said mixing ini-miners providingr means whereby the mixing members iorce material laterally from one to another of said n'iixing members; and means for re-4 from the .a plurality of independent means for forcing material from the casing through said discharge openings; and a rotating wheel having a plurality of Wire spokes mounted adjacent said discharge openings adapted to move material from one of the discharge openings to another of said openings to facilitate mixing material.

7. A mixing machine comprising the combination of a housing having a plurality of intercommnnicating mixing chambers and having an inlet opening and a discharge opening, and relatively differentialv screw mixing members in said chambers'for manipulating the material and progressing it toward said discharge openingy 8. A mixing machine comprising the coinbination of a housing having a plurality of intercommunicating mixing chambers and having an inlet opening and a discharge opening, relatively diii'erential screvv` mixing members in said chambers for manipulating material and progressing it toward said dis*V I charge opening, and means for retardin the discharge of the material from sai opening.

9. In a mixin machine, the'combnation of a casing having a plurality of tubular communicatin chambers, rotating screws substantially tting said chambers and arranged to move the material relatively diferentially and simultaneously manipulate said material.

10. In a mixing machine, the combination i of a casing having a plurality of rotating screw members positioned irrisubstantially parallelism and in close relation and each operating to manipulate a mass of material and progressing masses atdifilerent speeds longitudinally, and a housing forming 1nd1- vidual chambers inclosing 'said screvvmembers and arranged with intercommunicating passages for the transference of material from one screw member to another.'

11. In a mixing machine,l the combination of a casing having a plurality of rotating screw members each opera-ting to manipulute a mass of 'material and progressing 'i nermixing of portions of material being umnipnlated by seid screw members.

12. In a. mixing machine, the combination of :i Casin l having a plurality of rotating screw mem erseae o erating to manipulate "in "t muss of material a d' pro essing masses diferentjspeeds longitu inallv, e'housing forming individual chambers inclosing said screw members and arranged with intercommunlcatlng passages to permit the intermixing of vportions of material beingl manipulated by said screw members, and a hopper communicating with said chambers and into Which the material is fed.

In testimony whereof I 'have signed my name to this specification on this 7th day 20 of March, A. D. 1917. y

GEORGE W. BULLEY.V 

